6421204626 has 16 divisors (see below), whose sum is σ = 12846472128. Its totient is φ = 2139724400.

The previous prime is 6421204597. The next prime is 6421204633. The reversal of 6421204626 is 6264021246.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148545 + ... + 186836.

It is an arithmetic number, because the mean of its divisors is an integer number (802904508).

Almost surely, 2^6421204626 is an apocalyptic number.

6421204626 is an abundant number, since it is smaller than the sum of its proper divisors (6425267502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6421204626 is a wasteful number, since it uses less digits than its factorization.

6421204626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338577.

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 6421204626 is about 80132.4193195239. The cubic root of 6421204626 is about 1858.6837554372.

The spelling of 6421204626 in words is "six billion, four hundred twenty-one million, two hundred four thousand, six hundred twenty-six".